As a wise ham told me. What do you need a tuner for? Don't be lazy, fix your antennas. If they aren't broken, then build resonate antennas. They just work the best.
Mike va3mw On Wed, Feb 17, 2016 at 4:57 PM, Gerald Manthey <[email protected]> wrote: > Why is 10' to 15' of coax what you would want if using a tuner in the > shack? I know about loses in really long runs, but why 10 to 15 feet? > Thanks asking to learn not criticizing. > Gerald > > > On Feb 17, 2016, at 3:31 PM, Jim Rodenkirch <[email protected]> > wrote: > > > > Gary - depends on your antenna and how you feed it. > > > > If you intend to feed a multi-band antenna with open wire line, you'll > need > > some sort of tuner at the point where you transition from open wire to > coax: > > > > - if you plan on doing that out near the base of your antenna (the most > > efficient spot) then save your > > money and purchase an auto tuner, e.g., an LDG Z11 ProII, and place > it > > at the point where the open > > wire line transitions to coaxial feed. > > - if you plan on doing that inside the shack and can keep the coaxial > run > > short, the internal auto tuner > > would work, albeit you could employ an LDG Z11 ProII there as well. > > > > If you plan on feeding any multi band antenna with coax of a length > longer > > than 10' to 15' an auto tuner inside the shack isn't worth much -- place > an > > LDG Z11 ProII style auto tuner at the base of the antenna, 'tween the > > coaxial fee line and the antenna feed point and call it a day. > > > > If you plan on taking the K3S on portable trips....its auto tuner wud be > 'da > > way to go, as long as you keep coaxial runs 'tween the K3S and the > antenna > > feed point short...."short" means < 10' to 15' or so. > > > > 72 de Jim R. K9JWV > > > > > > > > -- > > View this message in context: > http://elecraft.365791.n2.nabble.com/Amp-or-tuner-Chicken-or-Egg-tp7614243p7614247.html > > Sent from the Elecraft mailing list archive at Nabble.com. > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:[email protected] > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to [email protected] > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
